Rotation Earth Science

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Earth, rotation

Earth's Rotation Sped Up on July 9—and We're Not Sure Exactly Why

On July 9, 2025, scientists at the International Earth Rotation and Reference Systems Service (IERS) reported that the Earth completed its rotation approximately 1.3 to 1.6 milliseconds faster than the standard 24-hour period. Moreover, this is expected to happen again on July 22 and August 5 this year.

· 2d · on MSN

Earth’s Rotation Is Speeding Up This Summer. Here’s Why

· 2d · on MSN

Is Earth's rotation speeding up? Why these 3 summer days may be shorter than usual

Earth Is Spinning Faster and Days Are Getting Shorter, for Now

The planet’s rotation fluctuates as it travels around the sun, and measurements suggest we’re losing more than a millisecond ...

ZME Science on MSN3d

Earth Is Spinning Faster Than Usual. Scientists Aren’t Sure Why

Atomic clocks — among the most precise instruments humans have ever built — have been keeping track of Earth’s spin since the ...

CNN1y

Earth’s inner core has slowed so much it’s moving backward ...

For a while, the scientists reported, the core’s rotation matched Earth’s spin. Then it slowed even more, until the core was moving backward relative to the fluid layers around it.

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